EP0702963B1 - Procédé de nettoyage et de désinfection d'appareils et d'instruments à l'aide d'une machine - Google Patents

Procédé de nettoyage et de désinfection d'appareils et d'instruments à l'aide d'une machine Download PDF

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Publication number
EP0702963B1
EP0702963B1 EP95106268A EP95106268A EP0702963B1 EP 0702963 B1 EP0702963 B1 EP 0702963B1 EP 95106268 A EP95106268 A EP 95106268A EP 95106268 A EP95106268 A EP 95106268A EP 0702963 B1 EP0702963 B1 EP 0702963B1
Authority
EP
European Patent Office
Prior art keywords
cleaning
instruments
liquor
water
acid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP95106268A
Other languages
German (de)
English (en)
Other versions
EP0702963A1 (fr
Inventor
Jürgen Dr. Staffeldt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chemische Fabrik Dr Weigert GmbH and Co
Original Assignee
Chemische Fabrik Dr Weigert GmbH and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chemische Fabrik Dr Weigert GmbH and Co filed Critical Chemische Fabrik Dr Weigert GmbH and Co
Publication of EP0702963A1 publication Critical patent/EP0702963A1/fr
Application granted granted Critical
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Anticipated expiration legal-status Critical
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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Disinfection or sterilisation of materials or objects, in general; Accessories therefor
    • A61L2/16—Disinfection or sterilisation of materials or objects, in general; Accessories therefor using chemical substances
    • A61L2/18—Liquid substances
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Disinfection or sterilisation of materials or objects, in general; Accessories therefor
    • A61L2/02—Disinfection or sterilisation of materials or objects, in general; Accessories therefor using physical processes
    • A61L2/04—Heat

Definitions

  • the invention relates to a method for machine cleaning and thermal disinfection of medical and biotechnological Apparatus and instruments in a single-tank machine.
  • dishwashers For cleaning and disinfection of medical or surgical and biotechnological instruments and Appliances are used special dishwashers; the Disinfection is thermal.
  • dishwashers are here used essentially two types of machines, namely on the one hand so-called refueling machines with fresh water change, e.g. according to DE-A-3 601 777 and DE-A-3 327 466, and on the other hand so-called. Cycle lanes in which the instruments are different one after the other Go through cleaning and disinfection zones.
  • the program sequence for the one-tank machines is typical as follows: cold or hot water runs into the machine and is used for pre-cleaning. Then either with fresh water again or with the already run-in water Cold or warm water an alkaline cleaning by dosing an alkaline detergent and heating the Detergent fleet at temperatures of 45-60 ° C.
  • the detergent liquor is pumped out; this is followed by neutralization with an acidic one Reagent and a rinse with water in several rinse cycles.
  • the last rinse is optimal here with demineralized water, and this last Rinse water is at thermal disinfection temperatures of 85-93 ° C heated with appropriate temperature holding time.
  • This goal can be achieved according to the invention in that a procedure in tanker machines of the commercial type used, according to which the apparatus and instruments with a acidic or acidic cleaning liquor at temperatures treated up to 55 ° C, the detergent fleet in the presence of Apparatus and instruments compatible with this basic Detergent and neutralizing agent under adjustment a pH of at least 6.5 and the apparatus and instruments, if necessary with further heating of the Fleet of detergent, cleaned further, and that the alkaline Detergent solution, if necessary after neutralization thereof, removed as well as the apparatus and instruments at least once with fresh water and finally with demineralized Fresh water or soft water rinsed, the rinse with the demineralized fresh water or soft water under thermal disinfection conditions.
  • a refueling machine is thus the usual way with fresh water change with cold water filled.
  • An acidic cleaner is added to the cold water; the acidic cleaning medium is then used for cleaning in a relatively low temperature range used. This can damage instruments, switch off especially due to corrosion. With an acidic cleaning liquor residues on apparatus and Instruments are already removed.
  • the cold, acidic cleaning solution used gradually at temperatures up to 55 ° C, in particular up to 40 ° C can be heated, the addition of an alkaline Cleaning and neutralizing agent for the production of the further cleaning required alkaline setting the cleaning solution.
  • the cleaner must do so be that when dosing into the acidic cleaning solution does not lead to flocculation or precipitation. Doing so neutralized until the pH is at least 6.5 or up to 7.5 is, or it is particularly over-neutralized until the pH of the cleaning solution is in the range of 9 to 12. This is followed by further cleaning with this alkalized Cleaner fleet. Then they close usual neutralization and rinse cycles, preferably the neutralizing agent in the alkalized cleaning solution is metered in, so that a pH-neutral waste water leaves the dishwasher.
  • Fresh water is understood to be water on which usual ways, e.g. through ion exchange or reverse osmosis, all or part of the minerals it contains have been withdrawn.
  • the method of the invention has the particular advantage that the cleaning of the apparatus and instruments to be treated on the one hand in acid and on the other hand in neutral or alkaline Milieu takes place, so that such impurities are effective be removed that are only in the acidic or only in the neutral to remove alkaline particularly thoroughly, and nevertheless, the wastewater is not acidic or alkaline Detergent solutions.
  • the cleaner liquor a pH in the range of 1 to 4; the treatment with the acidic cleaning liquor is preferably carried out in Temperature range between 10 and 30 ° C, especially at Ambient temperature.
  • the detergent fleet after neutralization or Alkalization has a pH in the range of 7 to 12, in particular from 9 to 12.
  • the re-loading of the dishwasher with fresh water Rinse After completing the acidic and alkaline cleaning step as well as the neutralization of the detergent fleet the re-loading of the dishwasher with fresh water Rinse.
  • the last rinsing step in the machine is carried out Heating this last rinse water, preferably demineralized Water, up to thermal disinfection temperatures.
  • the Thermal disinfection temperatures depend on national different hygiene regulations and can for example 5 min at 85 ° C, 3 min at 93 ° C or 10 min at 93 ° C.
  • Acidic cleaners are organic monocarboxylic acids such as Formic acid or acetic acid or hydroxycarboxylic acids such as Citric acid or malic acid. Even inorganic acids like Phosphoric acid, sulfuric acid, nitric acid or amidosulfonic acid are possible, also peracids, e.g. B. Peracetic acid can be used.
  • the acidic cleaner can be used in addition to the acids described above Auxiliaries such as dispersing agents, wetting agents, corrosion-preventing agents Additives or the like included.
  • the alkaline that can be used in the process of the invention Cleaner can e.g. B. potassium hydroxide, sodium hydroxide, nitrilotrisacetic acid, EDTA (ethylenediaminetetraacetic acid), polyphosphate, Hardness dispersants, surfactants and corrosion-reducing Additives, e.g. B. Amine derivatives such as triethanolamine.
  • B. potassium hydroxide, sodium hydroxide, nitrilotrisacetic acid, EDTA (ethylenediaminetetraacetic acid), polyphosphate, Hardness dispersants, surfactants and corrosion-reducing Additives e.g. B. Amine derivatives such as triethanolamine.
  • the aforementioned ingredients are not new in and of themselves are the cleaning specialist in the field mentioned here well known.

Landscapes

  • Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Chemical & Material Sciences (AREA)
  • Detergent Compositions (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • External Artificial Organs (AREA)

Claims (6)

  1. Procédé pour le nettoyage mécanique et la désinfection thermique d'appareils et instruments médicaux et biotechnologiques dans une machine monobac, caractérisé en ce que l'on traite les appareils et les instruments avec un bain d'agent nettoyant acide ou à réglage acide à des températures atteignant 55°C, en ce qu'on ajoute au bain d'agent nettoyant contenant les appareils et les instruments un agent basique neutralisant et nettoyant compatible avec le bain en prévoyant une valeur de pH d'au moins 6,5 et on poursuit le nettoyage des appareils et des instruments tout en continuant éventuellement à chauffer le bain d'agent nettoyant, en ce qu'on élimine la solution alcaline nettoyante après l'avoir éventuellement neutralisée et en ce que l'on rince au moins une fois les appareils et les instruments à l'eau claire et pour finir à l'eau fraíche déminéralisée ou à l'eau adoucie, le rinçage s'effectuant à l'eau fraíche déminéralisée ou adoucie dans des conditions thermiques de désinfection.
  2. Procédé selon la revendication 1, caractérisé en ce que le bain d'agent nettoyant présente une valeur de pH comprise entre 1 et 4.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le traitement au bain nettoyant acide s'effectue à des températures comprises entre 10° et 30°C, en particulier à la température ambiante.
  4. Procédé selon au moins l'une des revendications 1 à 3, caractérisé en ce que le bain d'agent nettoyant présente après la neutralisation ou l'alcalisation une valeur de pH comprise entre 7 et 12, en particulier entre 9 et 12.
  5. Procédé selon au moins l'une des revendications 1 à 4, caractérisé en ce que la désinfection thermique s'effectue à des températures supérieures à 84°C, en particulier supérieures à 90°C.
  6. Procédé selon la revendication 5, caractérisé en ce que la désinfection thermique s'effectue pendant au moins 3 minutes, en particulier au moins 10 minutes.
EP95106268A 1994-09-26 1995-04-26 Procédé de nettoyage et de désinfection d'appareils et d'instruments à l'aide d'une machine Expired - Lifetime EP0702963B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4434308A DE4434308A1 (de) 1994-09-26 1994-09-26 Verfahren zum maschinellen Reinigen und Desinfizieren von Apparaten und Instrumenten
DE4434308 1994-09-26

Publications (2)

Publication Number Publication Date
EP0702963A1 EP0702963A1 (fr) 1996-03-27
EP0702963B1 true EP0702963B1 (fr) 1999-01-20

Family

ID=6529188

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95106268A Expired - Lifetime EP0702963B1 (fr) 1994-09-26 1995-04-26 Procédé de nettoyage et de désinfection d'appareils et d'instruments à l'aide d'une machine

Country Status (3)

Country Link
EP (1) EP0702963B1 (fr)
AT (1) ATE175880T1 (fr)
DE (2) DE4434308A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19710256A1 (de) * 1997-03-13 1998-09-17 Henkel Ecolab Gmbh & Co Ohg Desinfektionsverfahren
US6706290B1 (en) 1998-07-06 2004-03-16 Olvai E. Kajander Methods for eradication of nanobacteria
WO2000001238A1 (fr) * 1998-07-06 2000-01-13 Kajander E Olavi Procedes relatifs a l'elimination des nanobacteries
DE10061278B4 (de) * 2000-12-08 2004-09-16 GFD-Gesellschaft für Diamantprodukte mbH Instrument für chirurgische Zwecke
DE102007009382A1 (de) * 2007-02-20 2008-08-21 Melag Ohg Verfahren zur Reinigung und zur thermischen Desinfektion von Gegenständen
DE102009038213A1 (de) * 2009-08-20 2011-09-08 Fresenius Medical Care Deutschland Gmbh Desinfektionsmittel, dessen Verwendung und Desinfektionsverfahren
CN106729920A (zh) * 2017-01-16 2017-05-31 广州市宜维爱科技有限公司 一种生物医疗垃圾的多级处理方法及其设备

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2749448A1 (de) * 1977-11-04 1979-05-10 Stierlen Maquet Ag Verfahren zum reinigen und desinfizieren von gegenstaenden sowie spuelmaschine zur durchfuehrung des verfahrens
DE2852072A1 (de) * 1978-11-29 1980-06-12 Gilowy Hans Maschf Maschine zum reinigen, desinfizieren und trocknen von laborglas und geraeten, insbesondere von anaesthesie-utensilien
DE3601744A1 (de) * 1986-01-22 1987-07-23 Miele & Cie Verfahren zum reinigen, desinfizieren und spuelen von medizinischen instrumenten, wie dental-bestecke oder dgl.

Also Published As

Publication number Publication date
DE59504886D1 (de) 1999-03-04
ATE175880T1 (de) 1999-02-15
DE4434308A1 (de) 1996-03-28
EP0702963A1 (fr) 1996-03-27

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